18031160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{907}}^1$

素因数の和:996

約数の個数: 64

約数和(自身を含む): 47070720

約数和(自身を除く): 29039560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 907, 994, 1420, 1814, 1988, 2485, 2840, 3628, 3976, 4535, 4970, 6349, 7256, 9070, 9940, 12698, 18140, 19880, 25396, 31745, 36280, 50792, 63490, 64397, 126980, 128794, 253960, 257588, 321985, 450779, 515176, 643970, 901558, 1287940, 1803116, 2253895, 2575880, 3606232, 4507790, 9015580, 18031160]

約数ペア:

[(1, 18031160), (2, 9015580), (4, 4507790), (5, 3606232), (7, 2575880), (8, 2253895), (10, 1803116), (14, 1287940), (20, 901558), (28, 643970), (35, 515176), (40, 450779), (56, 321985), (70, 257588), (71, 253960), (140, 128794), (142, 126980), (280, 64397), (284, 63490), (355, 50792), (497, 36280), (568, 31745), (710, 25396), (907, 19880), (994, 18140), (1420, 12698), (1814, 9940), (1988, 9070), (2485, 7256), (2840, 6349), (3628, 4970), (3976, 4535)]